1. The Practicing Mind: Developing Focus and Discipline in Your Life by Thomas M. Sterner, read by the author (Mountain Sage Publishing)

2. The Formula: How Algorithms Solve all our Problems and Create More by Luke Dormehl, narrated by Daniel Weyman (Gildan Media, LLC)

3. The Wright Brothers by David McCullough, narrated by the author (Simon & Schuster Audio)

4. Helmet for My Pillow: From Parris Island to the Pacific: A Young Marine's Stirring Account of Combat in World War II by Robert Leckie, narrated by James Badge Dale with an introduction by Tom Hanks (Audible Studios)